Passivation Mechanism of Carbon Steel Cerium Salt

This paper adopts neutral slow passivation on the formation of cerium nitrate passivation film were studied. The electrochemical impedance spectroscopy and polarization curves of passivation film were measured after different immersion time; and analyzes the deposition of cerium passivation film on the surface by scanning electron microscopy to characterize the morphology, the surface of the XPS test.